diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/memory.h | 47 | ||||
| -rw-r--r-- | include/exec/ram_addr.h | 7 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-gpu.h | 2 | ||||
| -rw-r--r-- | include/qemu/bitmap.h | 2 | ||||
| -rw-r--r-- | include/qemu/typedefs.h | 1 |
5 files changed, 59 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index c4fc94d..99e0f54 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -918,6 +918,53 @@ void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr, */ bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr, hwaddr size, unsigned client); + +/** + * memory_region_snapshot_and_clear_dirty: Get a snapshot of the dirty + * bitmap and clear it. + * + * Creates a snapshot of the dirty bitmap, clears the dirty bitmap and + * returns the snapshot. The snapshot can then be used to query dirty + * status, using memory_region_snapshot_get_dirty. Unlike + * memory_region_test_and_clear_dirty this allows to query the same + * page multiple times, which is especially useful for display updates + * where the scanlines often are not page aligned. + * + * The dirty bitmap region which gets copyed into the snapshot (and + * cleared afterwards) can be larger than requested. The boundaries + * are rounded up/down so complete bitmap longs (covering 64 pages on + * 64bit hosts) can be copied over into the bitmap snapshot. Which + * isn't a problem for display updates as the extra pages are outside + * the visible area, and in case the visible area changes a full + * display redraw is due anyway. Should other use cases for this + * function emerge we might have to revisit this implementation + * detail. + * + * Use g_free to release DirtyBitmapSnapshot. + * + * @mr: the memory region being queried. + * @addr: the address (relative to the start of the region) being queried. + * @size: the size of the range being queried. + * @client: the user of the logging information; typically %DIRTY_MEMORY_VGA. + */ +DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr, + hwaddr addr, + hwaddr size, + unsigned client); + +/** + * memory_region_snapshot_get_dirty: Check whether a range of bytes is dirty + * in the specified dirty bitmap snapshot. + * + * @mr: the memory region being queried. + * @snap: the dirty bitmap snapshot + * @addr: the address (relative to the start of the region) being queried. + * @size: the size of the range being queried. + */ +bool memory_region_snapshot_get_dirty(MemoryRegion *mr, + DirtyBitmapSnapshot *snap, + hwaddr addr, hwaddr size); + /** * memory_region_sync_dirty_bitmap: Synchronize a region's dirty bitmap with * any external TLBs (e.g. kvm) diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index c9ddcd0..6436a41 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -343,6 +343,13 @@ bool cpu_physical_memory_test_and_clear_dirty(ram_addr_t start, ram_addr_t length, unsigned client); +DirtyBitmapSnapshot *cpu_physical_memory_snapshot_and_clear_dirty + (ram_addr_t start, ram_addr_t length, unsigned client); + +bool cpu_physical_memory_snapshot_get_dirty(DirtyBitmapSnapshot *snap, + ram_addr_t start, + ram_addr_t length); + static inline void cpu_physical_memory_clear_dirty_range(ram_addr_t start, ram_addr_t length) { diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index f3a98a3..f3ffdce 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -72,6 +72,8 @@ struct virtio_gpu_conf { uint64_t max_hostmem; uint32_t max_outputs; uint32_t flags; + uint32_t xres; + uint32_t yres; }; struct virtio_gpu_ctrl_command { diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h index 63ea2d0..c318da1 100644 --- a/include/qemu/bitmap.h +++ b/include/qemu/bitmap.h @@ -220,6 +220,8 @@ void bitmap_set(unsigned long *map, long i, long len); void bitmap_set_atomic(unsigned long *map, long i, long len); void bitmap_clear(unsigned long *map, long start, long nr); bool bitmap_test_and_clear_atomic(unsigned long *map, long start, long nr); +void bitmap_copy_and_clear_atomic(unsigned long *dst, unsigned long *src, + long nr); unsigned long bitmap_find_next_zero_area(unsigned long *map, unsigned long size, unsigned long start, diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h index e95f28c..f08d327 100644 --- a/include/qemu/typedefs.h +++ b/include/qemu/typedefs.h @@ -23,6 +23,7 @@ typedef struct CPUAddressSpace CPUAddressSpace; typedef struct CPUState CPUState; typedef struct DeviceListener DeviceListener; typedef struct DeviceState DeviceState; +typedef struct DirtyBitmapSnapshot DirtyBitmapSnapshot; typedef struct DisplayChangeListener DisplayChangeListener; typedef struct DisplayState DisplayState; typedef struct DisplaySurface DisplaySurface; |